/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/float-benchs/drift_tenth.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 23:27:49,488 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 23:27:49,490 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 23:27:49,557 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 23:27:49,558 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 23:27:49,560 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 23:27:49,562 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 23:27:49,564 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 23:27:49,580 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 23:27:49,583 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-10 23:27:49,585 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-10 23:27:49,586 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 23:27:49,586 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 23:27:49,587 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 23:27:49,588 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 23:27:49,590 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 23:27:49,591 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 23:27:49,591 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 23:27:49,593 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 23:27:49,596 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 23:27:49,597 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 23:27:49,598 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 23:27:49,599 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 23:27:49,600 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 23:27:49,604 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 23:27:49,604 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 23:27:49,605 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 23:27:49,606 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 23:27:49,606 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 23:27:49,606 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 23:27:49,607 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 23:27:49,607 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 23:27:49,608 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 23:27:49,608 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 23:27:49,624 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 23:27:49,624 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 23:27:49,625 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 23:27:49,625 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 23:27:49,625 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 23:27:49,625 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 23:27:49,626 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 23:27:49,626 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf
[2022-01-10 23:27:49,668 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 23:27:49,669 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 23:27:49,669 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 23:27:49,669 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 23:27:49,670 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 23:27:49,670 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 23:27:49,670 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 23:27:49,670 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 23:27:49,670 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 23:27:49,670 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 23:27:49,671 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 23:27:49,671 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 23:27:49,671 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 23:27:49,671 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 23:27:49,671 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 23:27:49,671 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 23:27:49,671 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 23:27:49,671 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 23:27:49,672 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 23:27:49,672 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 23:27:49,672 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 23:27:49,672 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 23:27:49,672 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 23:27:49,672 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 23:27:49,672 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 23:27:49,672 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 23:27:49,672 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 23:27:49,672 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 23:27:49,672 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 23:27:49,673 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 23:27:49,673 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 23:27:49,673 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 23:27:49,673 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 23:27:49,674 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_NONE
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 23:27:49,986 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 23:27:50,001 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 23:27:50,003 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 23:27:50,004 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 23:27:50,004 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 23:27:50,005 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/drift_tenth.c
[2022-01-10 23:27:50,044 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08780821f/99bd69e189ca43ec88fc2b38f32a10ae/FLAG03e885c17
[2022-01-10 23:27:50,365 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 23:27:50,365 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/drift_tenth.c
[2022-01-10 23:27:50,370 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08780821f/99bd69e189ca43ec88fc2b38f32a10ae/FLAG03e885c17
[2022-01-10 23:27:50,816 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08780821f/99bd69e189ca43ec88fc2b38f32a10ae
[2022-01-10 23:27:50,818 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 23:27:50,819 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 23:27:50,822 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 23:27:50,822 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 23:27:50,827 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 23:27:50,828 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:27:50" (1/1) ...
[2022-01-10 23:27:50,828 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f75ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:27:50, skipping insertion in model container
[2022-01-10 23:27:50,832 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:27:50" (1/1) ...
[2022-01-10 23:27:50,836 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 23:27:50,868 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 23:27:50,957 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/drift_tenth.c[348,361]
[2022-01-10 23:27:50,978 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 23:27:50,985 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 23:27:50,994 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/drift_tenth.c[348,361]
[2022-01-10 23:27:50,996 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 23:27:51,004 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 23:27:51,005 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:27:51 WrapperNode
[2022-01-10 23:27:51,005 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 23:27:51,006 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 23:27:51,006 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 23:27:51,006 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 23:27:51,010 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:27:51" (1/1) ...
[2022-01-10 23:27:51,015 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:27:51" (1/1) ...
[2022-01-10 23:27:51,025 INFO  L137                Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32
[2022-01-10 23:27:51,025 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 23:27:51,026 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 23:27:51,026 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 23:27:51,026 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 23:27:51,031 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:27:51" (1/1) ...
[2022-01-10 23:27:51,032 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:27:51" (1/1) ...
[2022-01-10 23:27:51,033 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:27:51" (1/1) ...
[2022-01-10 23:27:51,033 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:27:51" (1/1) ...
[2022-01-10 23:27:51,036 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:27:51" (1/1) ...
[2022-01-10 23:27:51,038 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:27:51" (1/1) ...
[2022-01-10 23:27:51,039 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:27:51" (1/1) ...
[2022-01-10 23:27:51,040 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 23:27:51,041 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 23:27:51,041 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 23:27:51,041 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 23:27:51,042 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:27:51" (1/1) ...
[2022-01-10 23:27:51,048 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 23:27:51,056 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 23:27:51,066 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-10 23:27:51,071 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-10 23:27:51,097 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 23:27:51,097 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 23:27:51,097 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 23:27:51,097 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 23:27:51,146 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 23:27:51,147 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 23:27:51,217 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 23:27:51,220 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 23:27:51,220 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 23:27:51,221 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:27:51 BoogieIcfgContainer
[2022-01-10 23:27:51,221 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 23:27:51,222 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 23:27:51,222 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 23:27:51,223 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 23:27:51,225 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:27:51" (1/1) ...
[2022-01-10 23:27:51,253 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:27:51 BasicIcfg
[2022-01-10 23:27:51,253 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 23:27:51,254 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 23:27:51,254 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 23:27:51,256 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 23:27:51,256 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:27:50" (1/4) ...
[2022-01-10 23:27:51,257 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fb16d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:27:51, skipping insertion in model container
[2022-01-10 23:27:51,257 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:27:51" (2/4) ...
[2022-01-10 23:27:51,257 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fb16d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:27:51, skipping insertion in model container
[2022-01-10 23:27:51,257 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:27:51" (3/4) ...
[2022-01-10 23:27:51,257 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fb16d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:27:51, skipping insertion in model container
[2022-01-10 23:27:51,257 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:27:51" (4/4) ...
[2022-01-10 23:27:51,258 INFO  L111   eAbstractionObserver]: Analyzing ICFG drift_tenth.cTransformedIcfg
[2022-01-10 23:27:51,261 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 23:27:51,261 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 23:27:51,288 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 23:27:51,292 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-01-10 23:27:51,293 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 23:27:51,300 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 23:27:51,303 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 23:27:51,303 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 23:27:51,304 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 23:27:51,304 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 23:27:51,307 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 23:27:51,307 INFO  L85        PathProgramCache]: Analyzing trace with hash 1805578951, now seen corresponding path program 1 times
[2022-01-10 23:27:51,313 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 23:27:51,313 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947280278]
[2022-01-10 23:27:51,313 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 23:27:51,314 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 23:27:51,395 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 23:27:51,460 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 23:27:51,461 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 23:27:51,461 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947280278]
[2022-01-10 23:27:51,461 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947280278] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 23:27:51,461 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 23:27:51,462 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 23:27:51,463 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118398883]
[2022-01-10 23:27:51,463 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 23:27:51,466 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 23:27:51,466 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 23:27:51,495 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 23:27:51,495 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 23:27:51,497 INFO  L87              Difference]: Start difference. First operand  has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 23:27:51,505 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 23:27:51,505 INFO  L93              Difference]: Finished difference Result 20 states and 22 transitions.
[2022-01-10 23:27:51,519 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 23:27:51,520 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2022-01-10 23:27:51,521 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 23:27:51,525 INFO  L225             Difference]: With dead ends: 20
[2022-01-10 23:27:51,525 INFO  L226             Difference]: Without dead ends: 8
[2022-01-10 23:27:51,527 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 23:27:51,529 INFO  L933         BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 23:27:51,530 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 23:27:51,565 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8 states.
[2022-01-10 23:27:51,572 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8.
[2022-01-10 23:27:51,572 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 23:27:51,573 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions.
[2022-01-10 23:27:51,574 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6
[2022-01-10 23:27:51,574 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 23:27:51,574 INFO  L470      AbstractCegarLoop]: Abstraction has 8 states and 8 transitions.
[2022-01-10 23:27:51,574 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 23:27:51,574 INFO  L276                IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions.
[2022-01-10 23:27:51,574 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 23:27:51,574 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 23:27:51,575 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 23:27:51,575 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 23:27:51,581 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 23:27:51,582 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 23:27:51,582 INFO  L85        PathProgramCache]: Analyzing trace with hash 1805608742, now seen corresponding path program 1 times
[2022-01-10 23:27:51,582 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 23:27:51,582 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481879234]
[2022-01-10 23:27:51,582 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 23:27:51,582 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 23:27:51,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 23:27:51,694 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 23:27:51,694 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 23:27:51,694 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481879234]
[2022-01-10 23:27:51,695 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481879234] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 23:27:51,695 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 23:27:51,695 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 23:27:51,695 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966621813]
[2022-01-10 23:27:51,695 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 23:27:51,696 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 23:27:51,696 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 23:27:51,696 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 23:27:51,697 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 23:27:51,697 INFO  L87              Difference]: Start difference. First operand 8 states and 8 transitions. Second operand  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 23:27:51,706 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 23:27:51,706 INFO  L93              Difference]: Finished difference Result 14 states and 14 transitions.
[2022-01-10 23:27:51,707 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 23:27:51,707 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2022-01-10 23:27:51,707 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 23:27:51,707 INFO  L225             Difference]: With dead ends: 14
[2022-01-10 23:27:51,707 INFO  L226             Difference]: Without dead ends: 10
[2022-01-10 23:27:51,708 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 23:27:51,708 INFO  L933         BasicCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 23:27:51,709 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 23:27:51,709 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2022-01-10 23:27:51,711 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2022-01-10 23:27:51,711 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 23:27:51,711 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2022-01-10 23:27:51,712 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6
[2022-01-10 23:27:51,712 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 23:27:51,712 INFO  L470      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2022-01-10 23:27:51,712 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 23:27:51,712 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2022-01-10 23:27:51,712 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-01-10 23:27:51,712 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 23:27:51,712 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 23:27:51,713 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 23:27:51,713 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 23:27:51,713 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 23:27:51,713 INFO  L85        PathProgramCache]: Analyzing trace with hash 52644360, now seen corresponding path program 1 times
[2022-01-10 23:27:51,713 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 23:27:51,714 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752936907]
[2022-01-10 23:27:51,714 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 23:27:51,714 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 23:27:51,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 23:27:51,783 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 23:27:51,784 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 23:27:51,784 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752936907]
[2022-01-10 23:27:51,784 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752936907] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 23:27:51,784 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693466622]
[2022-01-10 23:27:51,784 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 23:27:51,785 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 23:27:51,785 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 23:27:51,786 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 23:27:51,787 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-10 23:27:51,834 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 23:27:51,835 INFO  L263         TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-10 23:27:51,838 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 23:27:52,052 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 23:27:52,053 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 23:27:52,112 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 23:27:52,113 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693466622] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 23:27:52,113 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 23:27:52,113 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2022-01-10 23:27:52,113 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136476999]
[2022-01-10 23:27:52,113 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 23:27:52,114 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-10 23:27:52,114 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 23:27:52,114 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-10 23:27:52,114 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-10 23:27:52,114 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 23:27:52,172 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 23:27:52,172 INFO  L93              Difference]: Finished difference Result 19 states and 21 transitions.
[2022-01-10 23:27:52,173 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 23:27:52,173 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2022-01-10 23:27:52,173 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 23:27:52,174 INFO  L225             Difference]: With dead ends: 19
[2022-01-10 23:27:52,174 INFO  L226             Difference]: Without dead ends: 15
[2022-01-10 23:27:52,174 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2022-01-10 23:27:52,175 INFO  L933         BasicCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 23:27:52,175 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 23:27:52,176 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2022-01-10 23:27:52,178 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2022-01-10 23:27:52,178 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 23:27:52,178 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2022-01-10 23:27:52,179 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8
[2022-01-10 23:27:52,179 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 23:27:52,179 INFO  L470      AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2022-01-10 23:27:52,179 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 23:27:52,179 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2022-01-10 23:27:52,179 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-01-10 23:27:52,180 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 23:27:52,180 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1]
[2022-01-10 23:27:52,209 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-10 23:27:52,380 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 23:27:52,381 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 23:27:52,381 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 23:27:52,381 INFO  L85        PathProgramCache]: Analyzing trace with hash 20991918, now seen corresponding path program 2 times
[2022-01-10 23:27:52,381 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 23:27:52,381 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96663179]
[2022-01-10 23:27:52,382 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 23:27:52,382 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 23:27:52,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 23:27:52,519 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 23:27:52,520 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 23:27:52,520 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96663179]
[2022-01-10 23:27:52,520 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96663179] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 23:27:52,520 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68189329]
[2022-01-10 23:27:52,520 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 23:27:52,520 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 23:27:52,521 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 23:27:52,522 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 23:27:52,571 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-10 23:27:52,626 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 23:27:52,627 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 23:27:52,628 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-01-10 23:27:52,629 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 23:28:01,909 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 23:28:01,910 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 23:28:02,733 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 23:28:02,734 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [68189329] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 23:28:02,734 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 23:28:02,734 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16
[2022-01-10 23:28:02,734 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803266371]
[2022-01-10 23:28:02,734 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 23:28:02,735 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-01-10 23:28:02,735 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 23:28:02,735 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-01-10 23:28:02,735 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=160, Unknown=2, NotChecked=0, Total=240
[2022-01-10 23:28:02,736 INFO  L87              Difference]: Start difference. First operand 15 states and 15 transitions. Second operand  has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 23:28:12,486 WARN  L228               SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 37 DAG size of output: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-10 23:28:16,305 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 23:28:16,305 INFO  L93              Difference]: Finished difference Result 29 states and 33 transitions.
[2022-01-10 23:28:16,305 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-01-10 23:28:16,305 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2022-01-10 23:28:16,306 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 23:28:16,306 INFO  L225             Difference]: With dead ends: 29
[2022-01-10 23:28:16,306 INFO  L226             Difference]: Without dead ends: 25
[2022-01-10 23:28:16,307 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=134, Invalid=244, Unknown=2, NotChecked=0, Total=380
[2022-01-10 23:28:16,307 INFO  L933         BasicCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-10 23:28:16,308 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 30 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 9 Unchecked, 0.6s Time]
[2022-01-10 23:28:16,308 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-01-10 23:28:16,311 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2022-01-10 23:28:16,312 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 25 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 23:28:16,312 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions.
[2022-01-10 23:28:16,312 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 14
[2022-01-10 23:28:16,312 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 23:28:16,312 INFO  L470      AbstractCegarLoop]: Abstraction has 25 states and 25 transitions.
[2022-01-10 23:28:16,312 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 23:28:16,313 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions.
[2022-01-10 23:28:16,313 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-01-10 23:28:16,313 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 23:28:16,313 INFO  L514         BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1]
[2022-01-10 23:28:16,333 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-01-10 23:28:16,519 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2022-01-10 23:28:16,519 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 23:28:16,519 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 23:28:16,520 INFO  L85        PathProgramCache]: Analyzing trace with hash 491392792, now seen corresponding path program 3 times
[2022-01-10 23:28:16,520 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 23:28:16,520 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754089456]
[2022-01-10 23:28:16,520 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 23:28:16,520 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 23:28:16,584 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 23:28:16,737 INFO  L134       CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 23:28:16,737 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 23:28:16,737 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754089456]
[2022-01-10 23:28:16,738 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754089456] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 23:28:16,738 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383642252]
[2022-01-10 23:28:16,738 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-10 23:28:16,738 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 23:28:16,738 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 23:28:16,748 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 23:28:16,749 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-10 23:28:17,026 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s)
[2022-01-10 23:28:17,026 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 23:28:17,028 INFO  L263         TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 32 conjunts are in the unsatisfiable core
[2022-01-10 23:28:17,030 INFO  L286         TraceCheckSpWp]: Computing forward predicates...